Re: [cdt-dev] Which event triggers language settings provider and from w

[Martin.Runge@xxxxxxxxxxxxxxxxx]

Hi Andrew,

The language settings provider is implemented
like this:

public class CMakeLangSetProvider
extends LanguageSettingsBaseProvider implements ILanguageSettingsProvider

...
and uses an instance of e.g. GCCBuildCommandParser
internally similar to this:
...
if comiler is gcc
     m_commandParser
= new GCCBuildCommandParser();
if compiler is clang
    m_commandParser = new
ClangBuildCommandParser();
if compiler is msvc
   m_commandParser = new
MSVCBuildCommandParser();
...

I need to detect the compiler at runtime,
so I do not know which compiler's build command parser to use until I parse
the output in the cmake generated file "compile_commands.json".
Thats why I don't derive from AbstractBuildCommandParser
but use an instance of it.

In the meanwhile I found out, that I
called startup() ...for all lines: processLine() .. shutdown()  every
time getSettingsEntries got called. I thought, I can optimize that later
and reparse the compiler_commands.json only if it changed. Now I think,
that the serialisation happening on shutdown() somehow triggers another
call to getSettingsEntries?

Another question: 
is it possible to avoid the serialisation
of the settings entries done by GCCBuildCommandParser and only use it to
parse the commands and store them in memory so I can access the results
by calling GCCBuildCommandParser.getSettingsEntries() ? I'm not sure if
this is better at all... with cmake, many include paths may be unknown
until cmake was run (Makefile generated). After that the compile_command.json
file is also present, so I could consider it as the persistent storage.
I would have to reparse it on every start of Eclipse, but the information
would not be kept double and cannot get out of sync.

What do you think?

thanks for your reply.
Martin





Von:      
 Andrew Gvozdev <angvoz.dev@xxxxxxxxx>
An:      
 "CDT General developers
list." <cdt-dev@xxxxxxxxxxx>
Datum:      
 2015-09-21 15:42
Betreff:    
   Re: [cdt-dev]
Which event triggers language settings provider and from where?
Gesendet von:    
   cdt-dev-bounces@xxxxxxxxxxx

---

Hi Martin,
What kind of language settings
provider is that? Is it derived from AbstractBuildCommandParser or AbstractBuiltinSpecsDetector?

Thanks,
Andrew

On Mon, Sep 21, 2015 at 3:41 AM, <Martin.Runge@xxxxxxxxxxxxxxxxx>
wrote:
Hi all,

I have a language settings provider (CMakeLangSetProvider) that is called
endlessly in a loop. Unfortunetly it is run in a worker thread, so I
cannot see the cause that triggered it in the callstack (see below).

Where should I look at to find the cause that lets the language settings
provider's getSettingEntries() method beeing? Afaik, ressource changes
trigger the language settings provider and I can see the TreeView in
project Explorer flickering. But I don't understand why.

Is there a way to exclude some project folders like the output folder from
those triggering the language settings provider?

best regards
Martin


CMakeLangSetProvider.getSettingEntries(ICConfigurationDescription,
IResource, String) line: 70
LanguageSettingsProvidersSerializer$LanguageSettingsWorkspaceProvider.getSettingEntries(ICConfigurationDescription,
IResource, String) line: 180
LanguageSettingsProvidersSerializer.getSettingEntriesPooled(ILanguageSettingsProvider,
ICConfigurationDescription, IResource, String) line: 1421
LanguageSettingsProvidersSerializer.getSettingEntriesUpResourceTree(ILanguageSettingsProvider,
ICConfigurationDescription, IResource, String) line: 1449
LanguageSettingsProvidersSerializer.getSettingEntriesByKind(ICConfigurationDescription,
IResource, String, int, boolean, boolean) line: 1508
LanguageSettingsProvidersSerializer.getSettingEntriesByKind(ICConfigurationDescription,
IResource, String, int) line: 1550
PathEntryTranslator.collectResourceDataEntries(ICConfigurationDescription,
int, CResourceData, Set<ICLanguageSettingEntry>) line: 2064
PathEntryTranslator.access$11(ICConfigurationDescription, int,
CResourceData, Set) line: 2037
PathEntryTranslator$1.visit(PathSettingsContainer) line: 2025
PathSettingsContainer.doAccept(IPathSettingsContainerVisitor) line: 519
PathSettingsContainer.accept(IPathSettingsContainerVisitor) line: 515
PathEntryTranslator.collectEntries(IProject, ICConfigurationDescription)
line: 2017
ConfigBasedPathEntryStore.getEntries(IProject, ICConfigurationDescription)
line: 237
ConfigBasedPathEntryStore.handleEvent(CProjectDescriptionEvent) line: 198
CProjectDescriptionManager.notifyListeners(CProjectDescriptionEvent) line:
2212
SetCProjectDescriptionOperation.executeOperation() line: 140
SetCProjectDescriptionOperation(CModelOperation).execute() line: 341
SetCProjectDescriptionOperation(CModelOperation).run(IProgressMonitor)
line: 607
Workspace.run(IWorkspaceRunnable, ISchedulingRule, int, IProgressMonitor)
line: 2241
SetCProjectDescriptionOperation(CModelOperation).runOperation(IProgressMonitor)
line: 638
XmlProjectDescriptionStorage(AbstractCProjectDescriptionStorage).setProjectDescription(ICProjectDescription,
int, IProgressMonitor) line: 203
CProjectDescriptionStorageManager.setProjectDescription(IProject,
ICProjectDescription, int, IProgressMonitor) line: 149
CProjectDescriptionManager.setProjectDescription(IProject,
ICProjectDescription, int, IProgressMonitor) line: 885
CProjectDescriptionManager.setProjectDescription(IProject,
ICProjectDescription, boolean, IProgressMonitor) line: 846
CProjectDescriptionManager$6.run(IProgressMonitor) line: 573
CProjectDescriptionManager$5.run(IProgressMonitor) line: 523
Workspace.run(IWorkspaceRunnable, ISchedulingRule, int, IProgressMonitor)
line: 2241
CProjectDescriptionManager.runAtomic(IWorkspaceRunnable, ISchedulingRule,
IProgressMonitor) line: 519
CProjectDescriptionManager.access$2(IWorkspaceRunnable, ISchedulingRule,
IProgressMonitor) line: 517
CProjectDescriptionManager$4.run(IProgressMonitor) line: 498
Worker.run() line: 55
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